Patents by Inventor Walter A. Vredenburgh

Walter A. Vredenburgh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Copolymers of alpha-methylstyrene and styrene and uses thereof
    Patent number: 4113801
    Abstract: This specification discloses manufacture of copolymers of alpha-methylstyrene and styrene in which the alpha-methylstyrene may range from about 50 to 90% and the softening point may range from about 60.degree. to 100.degree. C. The copolymers have especial utility with elastomers to produce pressure sensitive adhesives and the like, and in hot melt coatings.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: September 12, 1978
    Assignee: Hercules Incorporated
    Inventors: Paul S. Douglas, Anargiros Pete Patellis, Walter A. Vredenburgh
  • Copolymers of alpha-methylstyrene and styrene and uses thereof
    Patent number: 4075404
    Abstract: This specification discloses manufacture of copolymers of alpha-methylstyrene and styrene in which the alpha-methylstyrene may range from about 50 to 90% and the softening point may range from about 60.degree. to 100.degree. C. The copolymers have especial utility with elastomers to produce pressure sensitive adhesives and the like, and in hot melt coatings.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: February 21, 1978
    Assignee: Hercules Incorporated
    Inventors: Paul S. Douglas, Anargiros Pete Patellis, Walter A. Vredenburgh
  • Copolymers of alpha-methylstyrene and styrene and uses thereof
    Patent number: 3932332
    Abstract: This specification discloses manufacture of copolymers of alpha-methylstyrene and styrene in which the alpha-methylstryene may range from about 50 to 90% and the softening point may range from about 60.degree. to 100.degree.C. The copolymers have especial utility with elastomers to produce pressure sensitive adhesives and the like, and in hot melt coatings.
    Type: Grant
    Filed: February 16, 1973
    Date of Patent: January 13, 1976
    Assignee: Hercules Incorporated
    Inventors: Paul S. Douglas, Anargiros Pete Patellis, Walter A. Vredenburgh